Instructional windsurfing gauge



FIG. 1 is a front elevational view of an instructional windsurfing gaugeshowing my new design, the broken lines shown are for illustrativepurposes only and form no part of the claimed design;

FIG. 2 is a rear elevationasl view thereof;

FIG. 3 is an enlarged left side elevational view thereof;

FIG. 4 is an enlarged right side elevational view thereof;

FIG. 5 is an enlarged top plan view thereof; and,

FIG. 6 is an enlarged bottom plan view thereof.

The ornamental design for the instructional windsurfing gauge, as shownand described.